code: def callback(self, event):
      self._events.append(event)
  
file_path: vispy/vispy/scene/tests/test_node.py
imports: from vispy.scene.node import Node
  from vispy.testing import requires_application, TestingCanvas, run_tests_if_main, raises
  from vispy.visuals.transforms import STTransform
  import numpy
label_desc: Use image node_id 2 for calling the EventCheck obj's underlying member method code with example usage: obj.callback(event) without return types